kc3-lang/angle/src/libANGLE/renderer/gl/BlitGL.h

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• Hash : aa7203ef
  Author :
  Date : 2017-05-03T23:32:29
  

  Inherit privately from angle::NonCopyable.
  
  Make all inheritance from angle::NonCopyable private so the compiler
  complains about this (admittedly unlikely) code:
  
    class Foo: angle::NonCopyable {
        virtual ~Foo() { ... }
    };
    angle::NonCopyable *p = new Foo;
    delete p;
  
  In the above code ~Foo() is not called, only ~NonCopyable(), because the
  latter is not virtual.  Making it virtual would add overhead to all derived
  classes which don't already have a virtual method.
  
  Also tighten access in NonCopyable, because we can.
  
  BUG=angleproject:2026
  
  Change-Id: Id0dc4d959cfb7bb82cf49382118129abb1d3a4f0
  Reviewed-on: https://chromium-review.googlesource.com/495352
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
  

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• src/libANGLE/renderer/gl/BlitGL.h

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // BlitGL.h: Defines the BlitGL class, a helper for blitting textures
  
  #ifndef LIBANGLE_RENDERER_GL_BLITGL_H_
  #define LIBANGLE_RENDERER_GL_BLITGL_H_
  
  #include "angle_gl.h"
  #include "common/angleutils.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/Error.h"
  
  namespace gl
  {
  class Framebuffer;
  }
  
  namespace rx
  {
  
  class FramebufferGL;
  class FunctionsGL;
  class StateManagerGL;
  class TextureGL;
  struct WorkaroundsGL;
  
  class BlitGL : angle::NonCopyable
  {
    public:
      BlitGL(const FunctionsGL *functions,
             const WorkaroundsGL &workarounds,
             StateManagerGL *stateManager);
      ~BlitGL();
  
      gl::Error copyImageToLUMAWorkaroundTexture(GLuint texture,
                                                 GLenum textureType,
                                                 GLenum target,
                                                 GLenum lumaFormat,
                                                 size_t level,
                                                 const gl::Rectangle &sourceArea,
                                                 GLenum internalFormat,
                                                 const gl::Framebuffer *source);
  
      gl::Error copySubImageToLUMAWorkaroundTexture(GLuint texture,
                                                    GLenum textureType,
                                                    GLenum target,
                                                    GLenum lumaFormat,
                                                    size_t level,
                                                    const gl::Offset &destOffset,
                                                    const gl::Rectangle &sourceArea,
                                                    const gl::Framebuffer *source);
  
      gl::Error blitColorBufferWithShader(const gl::Framebuffer *source,
                                          const gl::Framebuffer *dest,
                                          const gl::Rectangle &sourceArea,
                                          const gl::Rectangle &destArea,
                                          GLenum filter);
  
      gl::Error copySubTexture(TextureGL *source,
                               size_t sourceLevel,
                               TextureGL *dest,
                               GLenum destTarget,
                               size_t destLevel,
                               const gl::Extents &sourceSize,
                               const gl::Rectangle &sourceArea,
                               const gl::Offset &destOffset,
                               bool needsLumaWorkaround,
                               GLenum lumaFormat,
                               bool unpackFlipY,
                               bool unpackPremultiplyAlpha,
                               bool unpackUnmultiplyAlpha);
  
      gl::Error copyTexSubImage(TextureGL *source,
                                TextureGL *dest,
                                const gl::Rectangle &sourceArea,
                                const gl::Offset &destOffset);
  
      gl::Error initializeResources();
  
    private:
      void orphanScratchTextures();
      void setScratchTextureParameter(GLenum param, GLenum value);
  
      const FunctionsGL *mFunctions;
      const WorkaroundsGL &mWorkarounds;
      StateManagerGL *mStateManager;
  
      GLuint mBlitProgram;
      GLint mTexCoordAttributeLocation;
      GLint mSourceTextureLocation;
      GLint mScaleLocation;
      GLint mOffsetLocation;
      GLint mMultiplyAlphaLocation;
      GLint mUnMultiplyAlphaLocation;
  
      GLuint mScratchTextures[2];
      GLuint mScratchFBO;
  
      GLuint mVAO;
      GLuint mVertexBuffer;
  };
  }
  
  #endif  // LIBANGLE_RENDERER_GL_BLITGL_H_
  

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